/*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/

#include "itkFrustumSpatialFunction.h"
#include "itkTestingMacros.h"


int
itkFrustumSpatialFunctionTest(int, char *[])
{

  // Define the dimensionality
  constexpr unsigned int PointDimension = 3;

  // Define the point coordinate representation type
  using PointCoordRepType = float;

  // Define the point type
  using PointType = itk::Point<PointCoordRepType, PointDimension>;

  // Define the type for the frustum spatial function
  using FrustumSpatialFunctionType = itk::FrustumSpatialFunction<PointDimension, PointType>;

  // Create the frustum spatial function
  FrustumSpatialFunctionType::Pointer frustrumSpatialFunction = FrustumSpatialFunctionType::New();

  ITK_EXERCISE_BASIC_OBJECT_METHODS(frustrumSpatialFunction, FrustumSpatialFunction, InteriorExteriorSpatialFunction);

  // Set the frustum properties
  FrustumSpatialFunctionType::InputType apex;
  apex.Fill(1.1);

  frustrumSpatialFunction->SetApex(apex);
  ITK_TEST_SET_GET_VALUE(apex, frustrumSpatialFunction->GetApex());

  double topPlane = 50.0;
  frustrumSpatialFunction->SetTopPlane(topPlane);
  ITK_TEST_SET_GET_VALUE(topPlane, frustrumSpatialFunction->GetTopPlane());

  double bottomPlane = 10.0;
  frustrumSpatialFunction->SetBottomPlane(bottomPlane);
  ITK_TEST_SET_GET_VALUE(bottomPlane, frustrumSpatialFunction->GetBottomPlane());

  double angleZ = 36;
  frustrumSpatialFunction->SetAngleZ(angleZ);
  ITK_TEST_SET_GET_VALUE(angleZ, frustrumSpatialFunction->GetAngleZ());

  double apertureAngleX = 54;
  frustrumSpatialFunction->SetApertureAngleX(apertureAngleX);
  ITK_TEST_SET_GET_VALUE(apertureAngleX, frustrumSpatialFunction->GetApertureAngleX());

  double apertureAngleY = 120;
  frustrumSpatialFunction->SetApertureAngleY(apertureAngleY);
  ITK_TEST_SET_GET_VALUE(apertureAngleY, frustrumSpatialFunction->GetApertureAngleY());


  // Test for a rotation in the XZ plane
  //
  auto rotationPlane = static_cast<FrustumSpatialFunctionType::FrustumRotationPlaneType>(1);
  frustrumSpatialFunction->SetRotationPlane(rotationPlane);
  ITK_TEST_SET_GET_VALUE(rotationPlane, frustrumSpatialFunction->GetRotationPlane());

  // Define inside/outside points to test the function
  FrustumSpatialFunctionType::InputType insidePoint;
  insidePoint[0] = 20.0;
  insidePoint[1] = 15.0;
  insidePoint[2] = 1.0;

  FrustumSpatialFunctionType::InputType outsidePoint1;
  outsidePoint1[0] = 0.0;
  outsidePoint1[1] = 2.0;
  outsidePoint1[2] = 1.0;

  FrustumSpatialFunctionType::InputType outsidePoint2;
  outsidePoint2[0] = 20.0;
  outsidePoint2[1] = 2.0;
  outsidePoint2[2] = 20.0;

  FrustumSpatialFunctionType::InputType outsidePoint3;
  outsidePoint3[0] = 1.0;
  outsidePoint3[1] = 40.0;
  outsidePoint3[2] = 200.0;

  FrustumSpatialFunctionType::InputType outsidePoint4;
  outsidePoint4[0] = 20.0;
  outsidePoint4[1] = 40.0;
  outsidePoint4[2] = 1.0;

  FrustumSpatialFunctionType::OutputType insidePointOutputValue = frustrumSpatialFunction->Evaluate(insidePoint);

  FrustumSpatialFunctionType::OutputType outsidePointOutputValue1 = frustrumSpatialFunction->Evaluate(outsidePoint1);
  FrustumSpatialFunctionType::OutputType outsidePointOutputValue2 = frustrumSpatialFunction->Evaluate(outsidePoint2);

  int testStatus = EXIT_SUCCESS;
  if (!insidePointOutputValue)
  {
    std::cerr << "Error " << std::endl;
    std::cerr << " Inside point: " << insidePoint << std::endl;
    std::cerr << " is outside frustum" << std::endl;
    std::cerr << "Test FAILED ! " << std::endl;
    testStatus = EXIT_FAILURE;
  }
  if (outsidePointOutputValue1)
  {
    std::cerr << "Error " << std::endl;
    std::cerr << " Expected : " << outsidePoint1 << std::endl;
    std::cerr << " point to be outside bottom/top planes" << std::endl;
    std::cerr << " is inside frustum" << std::endl;
    std::cerr << "Test FAILED ! " << std::endl;
    testStatus = EXIT_FAILURE;
  }
  if (outsidePointOutputValue2)
  {
    std::cerr << "Error " << std::endl;
    std::cerr << " Expected : " << outsidePoint2 << std::endl;
    std::cerr << " point to be outside due to aperture in X" << std::endl;
    std::cerr << " is inside frustum" << std::endl;
    std::cerr << "Test FAILED ! " << std::endl;
    testStatus = EXIT_FAILURE;
  }

  // Test for a rotation in the YZ plane
  //
  rotationPlane = static_cast<FrustumSpatialFunctionType::FrustumRotationPlaneType>(2);
  frustrumSpatialFunction->SetRotationPlane(rotationPlane);
  ITK_TEST_SET_GET_VALUE(rotationPlane, frustrumSpatialFunction->GetRotationPlane());

  insidePoint[0] = 20.0;
  insidePoint[1] = 15.0;
  insidePoint[2] = 1.0;

  outsidePoint1[0] = 0.0;
  outsidePoint1[1] = 2.0;
  outsidePoint1[2] = 1.0;

  outsidePoint2[0] = 20.0;
  outsidePoint2[1] = 2.0;
  outsidePoint2[2] = 20.0;

  insidePointOutputValue = frustrumSpatialFunction->Evaluate(insidePoint);

  outsidePointOutputValue1 = frustrumSpatialFunction->Evaluate(outsidePoint1);
  outsidePointOutputValue2 = frustrumSpatialFunction->Evaluate(outsidePoint2);

  if (!insidePointOutputValue)
  {
    std::cerr << "Error " << std::endl;
    std::cerr << " Inside point: " << insidePoint << std::endl;
    std::cerr << " is outside frustum" << std::endl;
    std::cerr << "Test FAILED ! " << std::endl;
    testStatus = EXIT_FAILURE;
  }
  if (outsidePointOutputValue1)
  {
    std::cerr << "Error " << std::endl;
    std::cerr << " Expected : " << outsidePoint1 << std::endl;
    std::cerr << " point to be outside bottom/top planes" << std::endl;
    std::cerr << " is inside frustum" << std::endl;
    std::cerr << "Test FAILED ! " << std::endl;
    testStatus = EXIT_FAILURE;
  }
  if (outsidePointOutputValue2)
  {
    std::cerr << "Error " << std::endl;
    std::cerr << " Expected : " << outsidePoint2 << std::endl;
    std::cerr << " point to be outside due to aperture in Y" << std::endl;
    std::cerr << " is inside frustum" << std::endl;
    std::cerr << "Test FAILED ! " << std::endl;
    testStatus = EXIT_FAILURE;
  }

  // Test for the condition where the top plane is less than the bottom plane
  topPlane = 10.0;
  frustrumSpatialFunction->SetTopPlane(topPlane);

  bottomPlane = 50.0;
  frustrumSpatialFunction->SetBottomPlane(bottomPlane);

  outsidePointOutputValue1 = frustrumSpatialFunction->Evaluate(outsidePoint1);
  if (outsidePointOutputValue1)
  {
    std::cerr << "Error " << std::endl;
    std::cerr << " Expected : " << outsidePoint1 << std::endl;
    std::cerr << " point to be outside bottom/top planes" << std::endl;
    std::cerr << " is inside frustum" << std::endl;
    std::cerr << "Test FAILED ! " << std::endl;
    testStatus = EXIT_FAILURE;
  }

  return testStatus;
}
